mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-23 12:51:13 +00:00
75 lines
2.7 KiB
C++
75 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2019 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "boot_functions.hpp"
|
|
#include "i2c_driver/i2c_api.hpp"
|
|
|
|
template<typename F>
|
|
static Result RetryUntilSuccess(F f) {
|
|
constexpr u64 timeout = 10'000'000'000ul;
|
|
constexpr u64 retry_interval = 20'000'000ul;
|
|
|
|
u64 cur_time = 0;
|
|
while (true) {
|
|
Result rc = f();
|
|
if (R_SUCCEEDED(rc)) {
|
|
return rc;
|
|
} else {
|
|
cur_time += retry_interval;
|
|
if (cur_time >= timeout) {
|
|
return rc;
|
|
}
|
|
}
|
|
svcSleepThread(retry_interval);
|
|
}
|
|
}
|
|
|
|
Result Boot::ReadI2cRegister(I2cSessionImpl &session, u8 *dst, size_t dst_size, const u8 *cmd, size_t cmd_size) {
|
|
Result rc;
|
|
if (dst == nullptr || dst_size == 0 || cmd == nullptr || cmd_size == 0) {
|
|
std::abort();
|
|
}
|
|
|
|
u8 cmd_list[I2cCommandListFormatter::MaxCommandListSize];
|
|
|
|
I2cCommandListFormatter formatter(cmd_list, sizeof(cmd_list));
|
|
if (R_FAILED((rc = formatter.EnqueueSendCommand(I2cTransactionOption_Start, cmd, cmd_size)))) {
|
|
std::abort();
|
|
}
|
|
if (R_FAILED((rc = formatter.EnqueueReceiveCommand(static_cast<I2cTransactionOption>(I2cTransactionOption_Start | I2cTransactionOption_Stop), dst_size)))) {
|
|
std::abort();
|
|
}
|
|
|
|
return RetryUntilSuccess([&]() { return I2cDriver::ExecuteCommandList(session, dst, dst_size, cmd_list, formatter.GetCurrentSize()); });
|
|
}
|
|
|
|
Result Boot::WriteI2cRegister(I2cSessionImpl &session, const u8 *src, size_t src_size, const u8 *cmd, size_t cmd_size) {
|
|
if (src == nullptr || src_size == 0 || cmd == nullptr || cmd_size == 0) {
|
|
std::abort();
|
|
}
|
|
|
|
u8 cmd_list[0x20];
|
|
|
|
/* N doesn't use a CommandListFormatter here... */
|
|
std::memcpy(&cmd_list[0], cmd, cmd_size);
|
|
std::memcpy(&cmd_list[cmd_size], src, src_size);
|
|
|
|
return RetryUntilSuccess([&]() { return I2cDriver::Send(session, cmd_list, src_size + cmd_size, static_cast<I2cTransactionOption>(I2cTransactionOption_Start | I2cTransactionOption_Stop)); });
|
|
}
|
|
|
|
Result Boot::WriteI2cRegister(I2cSessionImpl &session, const u8 address, const u8 value) {
|
|
return Boot::WriteI2cRegister(session, &value, sizeof(value), &address, sizeof(address));
|
|
}
|